good idea or not

i love to be able to remove these links on phpbb3 and make it harder for people who want to make a forum like my, at the moment there are 3 new staffordshire bull terrier forums on forumotion and the people who have made these forum are ex member or members of my forum so if i could be able to remove these link it will help me out alot. there are so many staffordshire bull terrier forums already and these extra one is going make it harder for me to find new members.